h1 {
    font-family: SimSun;
    text-align: center;
    color: white;
    background-color: black;
}

h2, h3 {
    font-family: SimSun;
    color: white;
    background-color: #336699;
}

p {
    text-align: justify;
    font-family: Simsun;
    text-indent: 2em;
}

.figure {
    width: 33%;
    margin-right: auto;
    margin-left: auto;
}

.caption {
    text-indent: 0em;
}

ul {
    background-color: lightgrey;
}

ul, ol li {
    font-family: Simsun;
}

ol {
    background-color: lightgrey;
    list-style-type: upper-roman;
}

.comment {
    font-style: italic;
}